Filter unit



H. L. GILMORE Oct. 3, 1950 FILTER UNIT 2 Sheets-Sheet 1 Filed Nov. 25,1946 jig. Z

Oct. 3, 1950 Filed Nov. 25; 1946 H. L.. GILMORE FILTER UNIT 2Sheets-Sheet 2 F/G. j

/n ven for w WW Patented ct. 3, 1195() FILTER UNIT Harry L. Gilmore,Adrian, Mich., assigner to Aget Manufacturing Company, Adrian, Mich., acorporation of Michigan Application November 25, 1946, Serial No.712,058

1 Claim.

This invention relates to entraining and removing suspensions fromgaseous medium.

This invention has utility when incorporated in air cleaners, puriers,filters, screens and salvaging, collecting and separating means forsubstances, as excess humidity, fume contamination, volatiles andvapors. In many factory and production operations, atmosphere chargesaffect vision, respiration of employees or attendants, as well asdevelop hazard to interior upkeep and appearance. The general volume ofair may be detrimental only as to odors, vapors, or particles insuspension. Besides respiratory value, especially for the ones occupyingthe room or building, the temperature thereof should be taken intoaccount. Especially in extreme heat or eX treme cold seasons, theconditioning of the air as to temperature involves considerable powerconsumption, much beyond that of operating the equipment hereindisclosed; as per volume oi air to be handled. Specifically, in manymachine operations, cutting tools are flooded with oil or coolant. Somene particles of metal may get into the air to be in suspension as adust, but the temperature of the tool and work promotes volatilizationand vaporization. Rising air, so laden, tends to coat the buildinginterior and equipment therein, and detrimentally. A suction duct astake-orf to a unit as herein disclosed eliminates this productionproblem.

Referring to the drawings:

Fig. l is a side elevation, with parts broken away, of an embodiment ofthe invention in al vapor collector;

Fig. 2 is a detail View of the motor and suction fan unit or blower ofFig. l, and its mounting, from the left; and Fig. 3 is a plan view ofthe unit.

The motor-blower unit lid Contaminated or vapor carrying air I, as froma machine tool using coolant, is conducted thru a duct 2 to an inlet 3to a suction chamber of a multiblade ian t of ablower in a housing 5having a discharge outlet 5 in a base l'. Gn the base i is a sheet metalchair or bracket il providing a pedestal upon which is xed a motor 9having a shaft IQ directly connected to the fan t. The base 'I has aperipheral upstanding bounding rim II. In convenient location forlifting this base and motor-blower unit are handles i2, I3.

Vlward ange I5 from which there outwardly exN tends parallel to thecentral section I 4l, a ring I6 to an upwardly extending rim Ilterminating in a bead It. The portions I5, I5, Il, form a channel,trough or chamber IS from which condensate or liquid may be drawn thru aspigot or valve 2G. i

Complementary to the channel I5, It, il, is a downwardly open channelfrom an outer bead 2 I, a riser iiange 22, an inwardly extending webportion 23 to a shorter downward ange 24J, from which there is a narrowinwardly extending ring portion 25 parallel to the channel web 23. Thering 25 leaves an open top 26.

Foramino'us or expanded metal cylinder 2l has thereabout a continuous orendless bat or blanket 28 of fibrous or lter material, such as berglass. The uniformly distributed or holding position for the blanket 28is established and maintained by an enveloping strip or wrap 29. whichalso may be of expanded metal and have its binding assembly eiected byinterlacing bend back portions 3&3 in eiecting the desired degree ofcompacting for the blanket ber 28 into a cylindrical lter nesting justoutside the anges I5, 2li, and extending to abut the webs I6, 23. Insome instances it may be desirable to shield the screen or lter cylinderor drum from knocks or bendings. To this end a third foraminous sectionor expanded metal cylu inder 3| is supplied and of diameter just to nestinside the flanges il, 22.

Upon locating the lter drum 21, 28, 29 and the shield 3| in the opposingchannels I5, I6, Il, and 22, 23, 24, bolts 32 thru the inward flange orrim 25 and directly down to the bottom il! adjacent to the inner wall21, have nuts 33 thereon. The bolts 32 with the nuts 33 thereon thusprovide assembly means for the drum nlter structure. Accordingly, thescreens may be locked in the assembly in forming an open top expansionor eddy receiving chamber 34.

The base l is a closure for the chamber 3e. The rim II slides snugly inconcentric seating relation with the flange 2fl as the base l restsperipherally on the rim or iiange 25. This places the motor-blower uniton top of the iilter body with the blower discharge outlet 5 as the foulair er1- trance tothe chamber 34.

Some of the factors of upon the basis of 614 performance have been cubicfeet per minute of air to enter the throat or intake 3 as of 5"diameter. With the lter drum region dened by the inside screen wall 2lof approximately 8 sq. ft. area, and the fan developing as much as 11/2water in measuring the pressure drop, the back pressure in the chamber34 has been in the range of .2 water above atmosphere. The ne fiberglass 28 has been brought to a body weight of about 6# per cu. ft. Thepressure of 11/2 water above atmospheric pressure is developed thru a1/3 H. P. motor operating at 3450 R. P. M.

When different vapors are in the liquid state, and they are of differentspecific gravities, separation thereof may be had by regulating thedrawings 01T thru the valve 20; Precipitation of particles of dust maybe removed from the chamber bottom I4, by lifting the lid unit clear ofthe opening 2G. With the motor 9, running, Water doused thru the inlet 3is converted into a spray and eilciently washes down the solids, oils,or

entrained matter from the filter. Uniform outward gas passage is hadthruout the entire filter :area at all times.

What is claimed and it is desired to secure by Letters Patent is:

A drum filter structure comprising a centrally upwardly offsetimperforate bottom bounded by an endless upwardly open trough, a topcomplementary to the trough having an endlessdownwardly open grooveopposing the trough, a removable closure for the top inward from thegroove, said closure providing a central port and a lateral rgiontherefrom, a fan motor mounted on the lateral region, a fan directlyconnected to the motor and mounted on the lateral region to exhaust thruthe port, three spaced perforate cylinders between the trough andgroove, a filter body spacing the inner two of said cylinders, assemblymeans between the top and bottom clamping the cylinders assembled insaid structure, and a draw-off for condensation from the trough, saidclosure rbeing removable with the fan and motor from the top, thereby toexpose the upwardly offset bottom for removal of precipitationaccumulation therefrom.

HARRY L. GILMORE.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 2,319,565 Stratton May 13, 19432,362,933 Schaefer Nov. 14, 1944 2,390,297 Gilmore Dec. 4, 19452,391,558 Essick Dec. 25, 1945

